Kurukshetra

After explaining the glories of Pushkara tirtha to Sri Jiva, Lord Nityananda along with His associates entered Uccahatta in Kurukshetra. Lord Nityananda said, “All the demigods along with all the tirthas have come to this Kurukshetra. All the tirthas from Brahmavarta and Kurukshetra stay here. Everyone, including Prithudaka, resides here and they easily engage in the service of Navadvipa-dhama. Whatever benefit one derives by residing in Kurukshetra for one hundred years, can be achieved just by spending one night at this place.” Nityananda Prabhu said, “The demigods used to gather here to enjoy gaura-katha, opening the market (hatta) of the holy name here. Therefore this place is known as Hattadanga. Whoever takes darsana of this place achieves unlimited love. Dear Jiva! This is the border of Nadia. Let us now go to the other side of the Bhagirathi.”
In the Mahabharata, Kurukṣetra-māhātmya, the great sage Pulastya says, “O Rajendra, please go to Kuruksetra, which fulfills all desires. By seeing that place all living entities are liberated from their sins. Whoever continually says, I will go to Kurukṣetra, I will live in Kuruksetra.’ will be freed of all sins. If the dust of Kuruksetra is raised by the wind and falls on the limbs of a sinner, that sinner will attain the highest abode.”
(Sri Navadvipa-Dhama-Mahatmya, Pramana-Khanda, Chapter 3)

In the fourth chapter of the Bhagwat Geeta it is affirmed by Lord Shri Krishna that formerly (some 40 crores of years before the battle of Kurukshetra) the mystic philosophy of Geeta was once explained to the Surya God. The message was received through a chain of disciplic succession. But in course of time when the chain was broken by some reason or other Lord Shri Krishna appeared again in the battle of Kurukshetra and taught Arjuna again the self-same truth of the Bhagwat Geeta.
(CC Adi-lila, Chapter 4)